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Engine-Codes – Mercury – C1266 Mercury

C1266 Mercury Code - Anti-Lock Brake System Power Valve Relay Circuit Failure

Quick Answer

The C1266 diagnostic trouble code (DTC) for Mercury vehicles indicates an Anti-Lock Brake System (ABS) Power Valve Relay Circuit Failure. Common causes include Electrical faults in the power valve relay circuit, Damaged wiring or connectors in the ABS system, A faulty power valve relay. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
C1266 Mercury indicates Anti-Lock Brake System Power Valve Relay Circuit Failure.
Common causes
Common causes include Electrical faults in the power valve relay circuit, Damaged wiring or connectors in the ABS system, A faulty power valve relay.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code C1266 Mercury Description

The C1266 diagnostic trouble code (DTC) for Mercury vehicles indicates an Anti-Lock Brake System (ABS) Power Valve Relay Circuit Failure. This code is specifically related to a malfunction in the power valve relay circuit within the ABS system. The power valve relay is responsible for controlling the flow of hydraulic pressure within the ABS system, which is crucial for the proper functioning of the system during braking.

OBDII Code C1266 Mercury - Anti-Lock Brake System Power Valve Relay Circuit Failure
C1266 Mercury Code - Anti-Lock Brake System Power Valve Relay Circuit Failure

Common Causes of C1266 Mercury

  1. Electrical faults in the power valve relay circuit.
  2. Damaged wiring or connectors in the ABS system.
  3. A faulty power valve relay.
  4. Issues with the ABS control module.
  5. Corrosion or contamination in the ABS system components.

Symptoms of C1266 Mercury

  1. Illumination of the ABS warning light on the dashboard.
  2. Decreased effectiveness of the ABS system during braking.
  3. Unusual noises coming from the ABS system during operation.
  4. Increased pedal effort required for braking.
  5. Inconsistent or unpredictable braking behavior.

How to Fix C1266 Mercury

  1. Begin by conducting a thorough diagnostic scan to retrieve the specific trouble codes and identify the underlying issue.
  2. Inspect the power valve relay circuit, wiring, and connectors for any signs of damage or corrosion.
  3. Test the power valve relay for proper functionality and replace if necessary.
  4. Check the ABS control module for any faults or malfunctions and address as needed.
  5. Clear the trouble codes from the vehicle's computer system and test the ABS system to ensure proper operation.

Cost to Fix C1266 Mercury

The typical repair costs for addressing a C1266 code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for a power valve relay replacement can range from $50 to $150, while labor costs can range from $100 to $200. Overall, the total repair cost for resolving a C1266 code may fall within the range of $150 to $350. It is important to note that these estimates are approximate and actual costs may vary based on factors such as location, vehicle make and model, and the specific repair shop. It is recommended to obtain quotes from local auto repair shops for a more accurate cost estimate.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1266 Mercury Code

1. What are the common symptoms of OBDII code C1266 in a Mercury vehicle?

The common symptoms of OBDII code C1266, Anti-Lock Brake System Power Valve Relay Circuit Failure in a Mercury, include the illumination of the ABS warning light on the dashboard and potential issues with the anti-lock braking system.

2. What can cause the OBDII code C1266 to be triggered in a Mercury vehicle?

The OBDII code C1266, Anti-Lock Brake System Power Valve Relay Circuit Failure in a Mercury, can be triggered by a faulty power valve relay, damaged wiring or connectors in the ABS system, or a malfunction in the ABS control module.

3. How serious is the OBDII code C1266 in a Mercury?

The OBDII code C1266, Anti-Lock Brake System Power Valve Relay Circuit Failure in a Mercury, should be addressed promptly as it can affect the proper functioning of the vehicle's anti-lock braking system, compromising safety during braking maneuvers.

4. Can I continue driving my Mercury with the OBDII code C1266 present?

It is not recommended to continue driving your Mercury with the OBDII code C1266, Anti-Lock Brake System Power Valve Relay Circuit Failure, as it can lead to potential brake system malfunctions and compromise your safety on the road.

5. How can the OBDII code C1266 in a Mercury be diagnosed?

Diagnosing the OBDII code C1266 in a Mercury involves using a diagnostic scanner to retrieve the fault code, conducting a visual inspection of the ABS system components, and testing the power valve relay and related circuits for proper functionality.

6. What are some repair tips for fixing the OBDII code C1266 in a Mercury?

Repairing the OBDII code C1266 in a Mercury may involve replacing the faulty power valve relay, repairing damaged wiring or connectors, or reprogramming the ABS control module. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

7. Can the OBDII code C1266 in a Mercury be reset without fixing the underlying issue?

While the OBDII code C1266 can be cleared from the vehicle's system using a diagnostic scanner, it is crucial to address the underlying issue causing the fault to prevent the code from reoccurring and ensure the proper functioning of the ABS system.

8. How much does it cost to repair the OBDII code C1266 in a Mercury?

The cost of repairing the OBDII code C1266, Anti-Lock Brake System Power Valve Relay Circuit Failure in a Mercury, can vary depending on the extent of the issue, the parts needed for repair, and labor costs. It is advisable to obtain quotes from reputable repair shops for accurate pricing.

9. Will fixing the OBDII code C1266 in a Mercury require specialized tools or equipment?

Repairing the OBDII code C1266 in a Mercury may require specialized tools such as a diagnostic scanner, multimeter, and possibly ABS system diagnostic equipment. It is recommended to have a professional mechanic with the necessary tools and expertise handle the repair.

10. Can the OBDII code C1266 be a recurring issue in a Mercury vehicle?

If the underlying cause of the OBDII code C1266, Anti-Lock Brake System Power Valve Relay Circuit Failure in a Mercury, is not properly addressed, it can become a recurring issue. Regular maintenance and timely repairs are essential to prevent the code from reoccurring.

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